Apparently.
Rhino generates …
Sure, I was just saying you can also raytrace NURBS directly without any triangulation involved, thereby directly visualizing them. I’m not mixing things up.
Don’t we get lost here in philosophical details? To what degree do we need the calculation to be 100% correct?
The question was whether the curves used in practice for trimmed surfaces are an approximation in the mathematical sense (distinct from any numerical imprecision issues that arise) - and indeed they are.
Of course use computers a simplified algorithm to tackle this issue - but does the resulting surface look that much like a bad approximation?
You’re begging the question here. It’s either an approximation or it isn’t, I didn’t say anything about good or bad. For most practical purposes, 1.00000000000001 is a pretty good approximation of 1. But if you maintain that those two numbers are equal because it makes no difference in practice, I must say we indeed are philosophically at odds.